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  1. //Angel Lugo CSC5 Chapter 4, P. 225, #21
  2. //
  3. /**************************************************************
  4. *
  5. * COMPUTE THE AREA OF CIRCLE, RECTANGLE, AND TRIANGLE
  6. * ____________________________________________________________
  7. * This program computes area of a circle, rectangle, or triangle
  8. * depending on inputs given for each output.
  9. *
  10. * Computation is based on:
  11. * The user's input on the length, width,
  12. * base, height, and radius asked 
  13. * for depending on choosen shape
  14. * ____________________________________________________________
  15. * INPUT
  16. * choice: Number 1-4 picked by user
  17. * radius: Radius entered by user
  18. * length: Length entered by user
  19. * width : Width entered by user
  20. * base  : Base entered by user
  21. * height: Height entered by user
  22. *
  23. * OUTPUT
  24. * area: Area of shape picked by user
  25. *
  26. **************************************************************/
  27. #include <iostream>
  28. #include <iomanip>
  29. using namespace std;
  30.  
  31. int main()
  32. {
  33. //
  34. // Declare variables to store inputs
  35.     int choice;
  36.     float area;
  37.     float radius;
  38.     float length;
  39.     float width;
  40.     float base;
  41.     float height;
  42. //
  43. // Loop until 4 is enterd
  44.     while (true)
  45.     {
  46. //
  47. // Display information in cout
  48.         cout << "Geometry Calculator\n\n";
  49.         cout << setw(37) << "1. Calculate the Area of a Circle\n"
  50.              << setw(40) << "2. Calculate the Area of a Rectangle\n"
  51.              << setw(39) << "3. Calculate the Area of a Triangle\n"
  52.              << setw(12) << "4. Quit\n\n"
  53.              << setw(28) << "Enter your choice (1-4): ";
  54. //
  55. // Get and Store User input in "cin" for Variable
  56.         cin >> choice;
  57. //
  58. // if the if statement is true do statement
  59.         if (choice == 4)
  60.         {
  61. //
  62. // Exit loop
  63.             break;
  64.         }
  65. //
  66. // Process choice inputs and continue with items in case
  67.         switch (choice)
  68.         {
  69.         case 1:
  70.             cout << "\nWhat is the radius of the circle? \n";
  71.             cin >> radius;
  72.             if (radius >= 0)
  73.             {
  74.                 area = 3.14159 * (radius * radius);
  75.                 cout << "The area of the circle is: " << area << "\n";
  76.             }
  77.             else
  78.             {
  79.                 cout << "\nDo not enter negative values\n";
  80.             }
  81.             break;
  82.  
  83.         case 2:
  84.             cout << "\nWhat is the length of the rectangle? \n";
  85.             cin >> length;
  86.             cout << "What is the width of the rectangle?  \n";
  87.             cin >> width;
  88.             if (length >= 0 && width >= 0)
  89.             {
  90.                 area = length * width;
  91.                 cout << "The area of the rectangle is: " << area << "\n";
  92.             }
  93.             else
  94.             {
  95.                 cout << "\nDo not enter negative values\n";
  96.             }
  97.             break;
  98.  
  99.         case 3:
  100.             cout << "\nWhat is the length of the triangle's base? \n";
  101.             cin >> base;
  102.             cout << "What is the height of the triangle? \n";
  103.             cin >> height;
  104.             if (base >= 0 && height >= 0)
  105.             {
  106.                 area = base * height * 0.5;
  107.                 cout << "The area of the triangle is: " << area << "\n";
  108.             }
  109.             else
  110.             {
  111.                 cout << "\nDo not enter negative values\n";
  112.             }
  113.             break;
  114. //
  115. // Display cout if invalid number was entered
  116.         default:
  117.             cout << "\nInvalid Choice. Enter a number between 1 and 4.\n";
  118.         }
  119.  
  120.         cout << "\nClick Enter to Continue\n";
  121. //
  122. // Ignore other key and wait for Enter key to Continue
  123.         cin.ignore();
  124.         cin.get();
  125.     }
  126.     return 0;
  127. }
Success #stdin #stdout 0.01s 5388KB
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Geometry Calculator

   1. Calculate the Area of a Circle
   2. Calculate the Area of a Rectangle
   3. Calculate the Area of a Triangle
   4. Quit

   Enter your choice (1-4): 
What is the radius of the circle? 
The area of the circle is: 2827.43

Click Enter to Continue
Geometry Calculator

   1. Calculate the Area of a Circle
   2. Calculate the Area of a Rectangle
   3. Calculate the Area of a Triangle
   4. Quit

   Enter your choice (1-4):
https://ideone.com/Vmj90E
HW 01: ch4 Geometry Calculator
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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